NDA Math Vector Algebra

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Question : 93 of 101
 
Marks: +1, -0
For what value of λ are the vectors λ
∧
i
+(1+λ)
∧
j
+(1+2λ)
∧
k
and (1−λ)i+λ
∧
j
+2
∧
k
perpendicular ?
[NDA II 2014]
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